Improved chaie-seat suppoktee



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, @niteh GEORGE BUTTERFIELD AND A. G. TREADWELL, OF BOSTON, MASSA- GHUSETTS.

IMPROVED CHAIR-SEAT SUPPORTER.

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TO ALL WHOM IT MAY CONCERN:

Be it known that we, G. BUTTEREIELD and A. G. TREADWELL, of city of Boston, in the county of Suffolk, and State of Massachusetts, have invented a new and useful Improvement in Chair-Seat Supporters; and we do hereby declare that the following is a full, clear, and exact description of the construction and operation of the same, reference being had to the accompanying drawing, forming a partof this specification, in which- Figure 1 is a plan.

Figure 2 are slats, formed of strong, stiff wood, or any suitable metal.

The nature of our invention consists in applying the slats b b, fig. 2, to and under the bottoms of stools, chairs, settees, &c., when the bottoms of the same are constructed of flagging, splints, cane, or other similar materiah for the purpose of supporting the seats, and preventingthem from sagging, and wearing or breaking off at the edges.

Much inconvenience is experienced with chairs, when their seats are formed of cane or other similar material, by their sagging when sat upon, thus causing a severe strain upon and against the edges of the frame, particularly the front railof the frame. This soon causes the splints to break off where they are strained over the edge of the frame. Thiscan be prevented, and the seats made much more durable, by applying any suitable number of slats to support the seat, as shown in fig. 1. The slats b b may be applied by mortising into the frame, or in'any obvious manner, so as the ends of the slats can move freely in their rests or hearings, as they are depressed by or released from weight. The slats should be confined nearly in 'contact with the seat, so that any pressure upon the seat will cause it to rest upon the slats. This will relieve the'strain upon the seat, and prevent it from wearing oh by sagging against the edge of the frame. The slats will also cause the seat to remain level when released from pressure, instead of the centre becoming sagged below the frame.

What we claim as our invention, and desire to secure by Letters Patent, is-

The slats b b, to be used substantially as herein described, and for the purpose specified.

In testimony whereof, we have hereunto set our signatures. 1

GEORGE BUTTERFIELD, A. G. TREADWELL.

Witnesses:

W. S. KYLE, EDMUND Crmnnmsrou. 

